/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.datavines.connector.plugin;

public class HiveMetricScript extends JdbcMetricScript {

    @Override
    public String histogramActualValue(String uniqueKey, String where) {
        return "select concat(k, '\001', cast(count as string)) as actual_value_" + uniqueKey
                + " from (select if(${column} is null, 'NULL', cast(${column} as string)) as k, count(1) as count from ${table} "
                + where + " group by ${column} order by count desc limit 50) T";
    }
}
